Crazy as a Lunatone - S7.E47

The heroes arrive in a deserted town and get rejected by Nurse Joy to stay in her Pokémon Center. They soon find out the PMC, Ken and Mary, whom Ash and Brock encountered in Johto, are here after a mysterious Pokémon. Arriving in the Pokémon Center, the heroes encounter Team Rocket, as well as the mysterious Pokémon, Lunatone. They soon find out Lunatone is weak and can be restored if it sees moonlight beams. While the heroes go to the place to heal Lunatone, they encounter the PMC guys again